General Manager of Hangzhou Jingda Electronics Talks about Remote Meter Reading System
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When constructing a remote meter reading system, Water Division recommends constructing a management platform first. It is necessary to consider whether there is a need for assistance other than meter reading such as scientific management, real-time data analysis, watch monitoring, pipe network analysis, remote remote control, and report statistics. The decision-making function must also consider whether or not it needs to interface with existing water management software. A powerful set of remote meter reading system software should be based on the perspective of the Department of Water Resources and give a rational design that can be analyzed through data collection and provide managers with the basis for scientific decision-making.
After building the software functions of the management platform, it is also necessary to determine the communication mode and transmission protocol between the acquisition device and the management platform software according to the actual situation. At present, there are two general communication methods: wireless GPRS or wired Ethernet. The transmission protocol between the acquisition equipment and the management platform software takes into account the follow-up maintenance or exchange requirements. It is generally prepared by the Water Division or negotiated with the manufacturer. The manufacturer should provide the collection equipment that meets the requirements of the Water Division.
Between the collection equipment and the tableware, most manufacturers currently use the CJ/T188-2004 statute, but because the statutory agreement is unclear and the manufacturers have different understandings of the agreement, the collection equipment of one manufacturer cannot generally be compatible with different manufacturers. Pass the watch. Taking into account the follow-up maintenance or interchange requirements, the Water Division can clarify the specific provisions of the CJ/T188-2004 agreement for vendor reference.
With regard to the selection of smart water meters, with the increasing shortage of water resources and the implementation of step-by-step water price measures by the country, the Water Division and users have paid more and more attention to the measurement accuracy and usage management methods of water meters. At present, the remote water meters used in the market are mainly divided into two categories: wired remote water meters and wireless remote water meters. The wired remote transmission mode is mainly divided into M-BUS remote transmission mode and RS485 remote transmission mode. Considering the construction cost and convenience, the M-BUS remote transmission mode is more convenient than the RS485 remote transmission, the cost is lower, and the signal transmission stability is also high. better. The wireless remote transmission method, which is currently more advanced, is a multi-level routing wireless transmission with an ad hoc network function. Each wireless remote water meter has a wireless routing function, which can transfer the surrounding water meter readings to the concentrator in multiple stages, and the meter reading is successful. Both rate and accuracy are extremely high. Compared with wired remote meter reading, wireless remote meter reading has the characteristics of no wiring, convenient construction, short implementation cycle, high efficiency, easy troubleshooting, and low implementation cost. In some areas such as low-density multi-story buildings and row houses, It is advisable to use areas that are difficult to be routed, such as renovation of old houses and rural reconstruction.
In order to establish a scientific and reasonable remote meter reading system for the water company and the water resources management department, it is also necessary to determine the acceptance criteria. Only when scientific and reasonable acceptance criteria and indicators are established, can the validity and rationality of the construction of the remote meter reading system be verified. , speak with the result, be responsible for the user!